Bird feeder



FIG. 1 shows a front elevation view of a bird feeder showing my new design, the left, right and rear view being the same;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a front perspective view thereof, taken from the top. 

The ornamental design for a bird feeder, as shown and described. 